- File operations work on "data/" folder or ".jrf" file

- [NEW] fopenres() works on .jrf resources, fopen on normal files

jfile.h

@@ -0,0 +1,12 @@
+#pragma once
+#include <stdio.h>
+
+#define SOURCE_FILE         0
+#define SOURCE_FOLDER       1
+
+void file_setresourcefilename(const char *str);
+void file_setresourcefolder(const char *str);
+void file_setsource(const int src);
+
+FILE *file_getfilepointer(const char *resourcename, int& filesize, const bool binary=false);
+char *file_getfilebuffer(const char *resourcename, int& filesize);